import javax.swing.JEditorPane;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.event.HyperlinkEvent;
import javax.swing.event.HyperlinkListener;
import javax.swing.text.BadLocationException;
import javax.swing.text.Document;
import javax.swing.text.Style;
import javax.swing.text.html.HTMLEditorKit;
import javax.swing.text.html.StyleSheet;


public class GUI extends JFrame{
    JEditorPane editorpane=new JEditorPane();
    //this is the constructor
    GUI(){
        JFrame frame=new JFrame("Frame");

        frame.add(editorpane);
        JScrollPane scroll=new JScrollPane(editorpane);

        editorpane.setContentType("text/html");
        editorpane.setEditable(false);
        editorpane.setText("SEOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().add(scroll);
        frame.show();
    }
    public void append(String s) {
    try{
        Document doc = editorpane.getDocument();
        doc.insertString(doc.getLength(),"\n",null);
        doc.insertString(doc.getLength(),s,null);

    }
    catch(BadLocationException exc){
    }
    }
    //main method
    public static void main(String args[]){

    GUI gui=new GUI();
    gui.append("